CN2384283Y

CN2384283Y - Globe for representing illumination change on day and night

Info

Publication number: CN2384283Y
Application number: CN 99225023
Authority: CN
Inventors: 任力军
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-09-04
Filing date: 1999-09-04
Publication date: 2000-06-21
Anticipated expiration: 2009-09-04

Abstract

The utility model relates to a globe for representing illumination change on day and night, and the utility model is composed of a sphere, a bow-shaped bracket and a base. The top end of the bow-shaped bracket is provided with a step motor, and the top end of an inner bracket of the center of the sphere is provided with a step motor, a bulb, a light shield plate, etc. The sphere is made of transparent rigid plastics. A microprocessor controls the step motor, drives a globe to rotate, and drives the light shield plate to shake within a certain range. The motion of the light shield plate can display the changes of the day and the night in one day of a certain area and the light irradiation changes of four seasons. The utility model has the advantages of simple structure and reasonable design, and the utility model can be used as a more ideal teaching and learning instrument.

Description

Reflect the terrestrial globe of illumination variation round the clock

The utility model belongs to can reflect the design and the manufacturing technology field of the terrestrial globe of illumination variation round the clock.

Employed terrestrial globe in teaching and scientific research mostly is the terrestrial globe that has base and movable axis, can only do two-way rotation at present.Though its structure is simple, its function is few, can not reflect that just the earth rotates the situation of change round the clock that is produced.Therefore say the teaching and the study instrument that are not very desirable.

The purpose of this utility model provides a kind of terrestrial globe that is provided with light source and shadow shield in synchronous motor, the spheroid that has.It not only can use by globe usually, can also reflect round the clock the variation with four seasons illumination.

Structure of the present utility model as shown in drawings; Constitute by base, support and spheroid.Its concrete structure is; One pillar (2) is arranged on base (1), a bow-shaped support (3) is arranged on pillar.Have inner support (4) in the bow-shaped support lower end, the upper end of bow-shaped support has one, on the axle stepper motor (7) is housed.One stepper motor (5) and shadow shield (10) are arranged on the inner support top.Shadow shield is plane or parabolic concentrator is specular.The top of inner support just in time is positioned at the center of spheroid.Have a bulb (6) in the shadow shield front portion, this bulb is used as light source.On the axle of bow-shaped support, install spheroid.Spheroid is to be made of first spheroid (8) and second spheroid (9), respectively carries socket on the hemisphere, inlays to combine.Have microprocessor and electrically-controlled component (11) in base inside.Spheroid of the present utility model adopts hard transparent plastic system.The axle that is had in the bow-shaped support upper end is called the arctic earth's axis, and the inner support that its lower end connects is as the South Pole earth's axis.Method of work of the present utility model is that requirement sets the initial moment and input microprocessor in advance, by two stepper motor work of microprocessor control.Drive terrestrial globe by stepper motor (7) and do the inhour rotation, the simulation earth rotation.Stepper motor in spheroid (5) drive shadow shield moves and makes light source illuminate spheroid just half.Spheroid rotated a circle in per 24 hours, showed intraday variation round the clock.For length round the clock that terrestrial globe can reflect that the earth forms because of season is different are changed and the polar day of the two poles of the earth, north and south generation and polar night phenomenon, shadow shield is under stepper motor drives, do the swing in positive and negative 23.5 ° of scopes, solid line position in the accompanying drawing (being the shadow shield present position) is equinox day, dot-and-dash line HI position is the summer solstice, and the FG position is winter solstice (Northern Hemisphere).

The utility model is simple in structure, and is reasonable in design ingenious, can not only be as common terrestrial globe usefulness, and can also reflect the variation round the clock and the seasonal variations of southern hemisphere and northern hemisphere, be a kind of even more ideal teaching and schooling apparatus.

Accompanying drawing is the utility model structural representation

1-base 2-pillar 3-bow-shaped support 4-inner support 5-stepper motor 6-bulb 7-stepper motor 8-first spheroid 9-second spheroid 10-shadow shield 11-microprocessor and electrically-controlled component

Solid line position in the accompanying drawing (shadow shield position) is equinox day

Dot-and-dash line HI position is the summer solstice

Dot-and-dash line FG position is the winter solstice

Spheroid of the present utility model is transparent rigid plastic system, and map can adopt printing or map film paper to paste.Its base is metal or plastics system, and all the other major parts are general or standard component, and its enforcement can be with reference to instructions and accompanying drawing, and the known technology processing assembling of pressing the processing of plastics and metal gets final product.

Claims

1. reflect the terrestrial globe of illumination variation round the clock, constitute by spheroid, base (1) and bow-shaped support (3), the lower end that it is characterized in that bow-shaped support has inner support (4), on the bow-shaped support upper shaft, have a stepper motor (7), have a stepper motor (5) and shadow shield (10) on the inner support top, have bulb (6) in the front of shadow shield, in base, have microprocessor and electrically-controlled component (11).